Improvement in ventilating greenhouses



2 Sheets-Sheet .1.

L. BREOHT. Ventilating Green-House. No. 209,854.

Patented Nov. 12,

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f M U W ".PETERS. PNOTO-LITHOGRAPHER, WASHINGTON- D. C.

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LOUIS BREOHT, or BALTIMORE, MARYLAND.

IMPROVEMENT I N VENTILATING GREENHOUSES.

Specification forming part of Letters Patent No. 209,854, dated November 12, 1878; application filed I September 25, 1878.

To all whom it may concern.-

Be it known that'I, LOUIS BRECHT, of Baltimore, in the county of Baltimore and State of Maryland, have invented certain new and nipulatin g each and its fastening or adjusting devices separately.

It consists, first, in the combination, with a series of hinged or pivoted windows of a green-house, of a common moving part or prime mover provided with gear-teeth, and connected with each window by intermediate connections, and a rotary operating rod or handle mounted in fixed bearings, provided with a suitable gear engaging with the gearteeth of the said prime mover, whereby the said common moving part or prime mover may be operated from a single point and communicate motion to each of the windows, for opening or closing the same.

It consists, secondly, in providing each of a series of swinging greenhouse-windows with a loosely-attached rod, each rod being also connected with a separate arm projecting from a single rock-shaft, which is operated through gear-connections by a suitable hand-wheel.

In the accompanying drawings, Figure 1 represents a transverse section of one side of a greenhouse having, my invention applied thereto. Fig. 2 is an inside view of one side of the greenhouse. Fig. 3 is a view of a modification of my invention.

The letters A and A indicate the watersheds or upper and lower roofs of the greenhouse. The entire house is composed of iron and glass. The upper vertical wall, B, is a skeleton iron frame, composed of the iron beams or girders b b, separated by vertical posts 0. The lower girder or beam, 1), is supported by iron pillars D, at suitable distances girder of the lower vertical wall, B. The

lower vertical wall is constructed in the same manner as the upper vertical wall, B. To the upper girder or beam of each of the vertical walls are hung the swinging windows E. At the lower edge of each window is loosely attached one end of a rod, f, the opposite end of which is pivoted to an arm, g, projecting from a horizontal rock-shaft, G, mounted'in bearings in brackets h, which are bolted to thelower beam or girder of each vertical wall. This rock-shaft extends along the series of swinging windowa-and is provided at any suitable point with a gear-wheel, I, with which engages a worm on a suitable operating-rod. The'worm K, which engages with the gearwheel of the upper rock-shaft, is shown as arranged upon a rod, k, which extends downward within reach from the floor of the house, terminating in a hand-wheel, l, and passing through steadying-bearings in arms m, projecting from a pillar, D. The worm K, which engages with the gear-wheel of the lower rockshaft, is shown as upon a rod extending horizontally, in convenient position for being turned by its Wheel l by a person standing on the floor of the house. The ends of the rods car- ,rying the worms K K have bearings in suitable brackets a, formed with eyes a, which embrace the rock-shafts on each side of the respective gear-wheels.

From theforegoing description it will readily beseenthatwhenthe hand-wheelsll are turned in one direction the rock shafts will be caused to turn and move the arms 1 outward, thus causing an outward thrust of the rods f, which opens the windows, while movement of the hand-wheels in the opposite direction causes the closingot' the windows.

In the modification shown in Fig. 3 th windows W are pivoted centrally, and the shafts c, to which the sash are secured, are

provided with pinions y. A reciprocating bar, R, arranged in suitable guidesor bear1ngs,1s

provided with rack-teeth '1', which engage with said gear-wheels, and as the bar is moved in either direction a corresponding movement is communicated to the windows, opening or closing the same, as desired. At one end the bar R is also provided with a short series of rack-teeth, t, with which engages a pinion, 12, mounted in a bracket, q, and gearing with a bevel-wheel having a downwardprojecting shaft, provided with a hand-wheel, 12. By means of this handle or lever, pinion, and rack-teeth the reciprocating bar is readily operated, as will be understood.

What I claim is-- 1. The combination, with a series of hinged or pivoted greenhouse-windows, of a movable shaft, bar, or part, connected with said windows, respectively, by intermediate connections, and provided with a series of gear-teeth and a rotary operating rod or handle mounted LOUIS BREOHT.

Witnesses:

JAMES L. NORRIS, JAMES A. RUTHERFORD. 

